Faceless Megaminx Rhombic Triacontahedron
3D-printed pieces were glued onto a megaminx to give it the shape of a rhombic triacontahedron. Compared with a "traditional" shape variant the face pieces of the megaminx are invisible.

Diamond Bob's Diamond 8 Puzzle
8 billiard balls in a square container. The balls can rotate around the perimeter, or move across the center along one axis. The goal is to scramble the balls and then return them to sequential order.